Clinton denies she had anything to do with starting Obama birther rumors back when she was competing for the nomination in 2007 and 2008. We know Hillary still hates Obama for beating her in 2008.
Hillary Clinton has "a lot of buffers" but there is testimony to support the rumors originated with and were spread by her campaign. While her media allies try to give her cover they have actually confirmed that she is probably the Mother of Birthers.
Daily Caller: Sidney Blumenthal's Dirty History With The Clintons
Daily Wire: Five Things You Need To Know About Sid Blumenthal: Reason (Sid Blumenthal is the human equivalent of Monica's semen stained dress): "Blumenthal's nastiness and willingness to fling shit like a howler monkey in heat earned him the sobriquet 'Sid Vicious'"
Instapundit: Washington Examiner: With the Clintons it is scams and ripoffs all the way down, Washington Examiner: Does Hillary have a Blumenthal Birther Problem?, Scott Adams: When Reality Turned Inside Out, and Washington Post: Donald Trump's Birther Event Was The Greatest Trick He Ever Pulled
Legal Insurrection: Clinton Ally David Brock Offering Cash for Dirt on Trump
Weekly Standard: Sidney Blumenthal: Dirty Trickster
Guardian: Sid Paid By Clinton